Super-Volcanoes, Part 3: Long Valley Caldera

[11gege]

Thank you for sharing your knowledge and video's for us to see.

[yoshibro552]

what are the causes

[Hightrain12]

Do you think San Diego, California's southmost city would be ok?

[WildwoodClaire1]

@Hightrain12 Depends on the size of the eruption and direction of prevailing winds. I think Las Vegas would be in more trouble than San Diego.

[willychavez22]

@Hightrain12 would los angeles be ok from this eruption?

[WildwoodClaire1]

@Hightrain12 Probably, but it really depends on the intensity of the eruption and prevailing winds. Some ash would probably fall.

[frozenstrawbs]

do scientists have a good idea about why there is so much crustal stretching b/w the rockies and the sierras? it seems counter-intuitive what is happening between two large mtn ranges in the middle of a continental plate.

[201greeneyes]

you are good they had a earthquake warning on 4/16/11 they had a swarm and back to back 4s

[Lawrence2061]

understand some of it

[markdzima]

How at risk might the San Fransisco bay area, or the state capital (Sacramento), be be from a Long Valley eruption?

[markdzima]

@markdzima

Let me clarify. I didn't mean to ask about the likelihood of an eruption, but rather about, if there WAS an eruption, what is the range of how bad might it be for those places?

[WildwoodClaire1]

@markdzima It would be awful, although I expect that prevailing winds would carry most of the ash east.

[brettppalmer]

Wow....that pic around 3:24 was breathtaking...Great, informative video as always, Claire!

[DLandonCole]

Did you say 1000 km^3 of magma? Bloody hellfire...

[Kindertautenleider]

Could a meteor hitting the earth cause a volcanic event?

[hildegain]

@Kindertautenleider It could potentially trigger an event that already has potential for eruption.

If the crust gives way over a large body of magma then I would say so.

[NaomiClareNL]

And my modelrailroad, a fictitous transcontinental US railroad, runs right through the area. It's management better have some emergency plans ready....

[mcrd2001]

Very interesting, watched it twice.

[lardo444]

we're all doomed. i can hardly wait for the big day.

peace, lardo.

[WildwoodClaire1]

@TheIntolerantAtheist Thanks for stopping by.

[WildwoodClaire1]

@TheIntolerantAtheist Thanks for laugh!

[Webofscience]

You should look up Mt Uturuncu in Bolivia (I think). That's my bet for the next very large eruption. They are tracking a large volume of magma growth, which may have potential to erupt. There was an interesting paper by Steve Sparks on it, and I know they are studying it in detail at Bristol University.

[WildwoodClaire1]

@Webofscience I've heard about that. And I may have mentioned it in Part 5 of this series. I can't recall for sure because I did this series over a year ago and haven't watched it lately.

[chaogenus]

I am glad you are reposting these videos. I was not subscribed when you first posted them so was not aware of the series. It is very interesting and informative.

[exacerbatedtaboo]

Ring of Fire....LOL!! The lyrics to that song always makes me think he was talking about an STD. Have you ever got to see a Volcano erupt Claire? I mean in an up close in personal type of way? I remember watching the National Geographic Channel about Mt. Pinatubo is it? Isn't that were you can go today and still see remains of bodies covered in volcanic ash?

[Desertphile]

"Dead and dying trees on the south side of Mammoth Mountain were first noticed in 1990. Since then, about 170 acres of trees have died on all sides of the volcano, especially near Horseshoe Lake. When the soil was surveyed in 1994 for carbon dioxide gas, exceptionally high concentrations of gas were found in the soil beneath the trees." -- USGS

[macnutz]

Great stuff. I'm learning a lot from your vids but not yet enough to ask intelligent questions.:)

[Desertphile]

Concerning the areas of dead trees, what is the CO2 concentration level that can kill trees? Maybe I'll just Google it....

[WildwoodClaire1]

@Desertphile I don't know, but the concentration in that area was enough to almost kill a forest ranger.

[RyuDarragh]

@WildwoodClaire1: It isn't just excess CO2 / lack of O2 that can kill a tree. CO, SO2 and O3 can also do a serious amount of damage to trees and plants.

[Desertphile]

Regarding climate, the volcanic ash tends to cool the planet while the CO2 ejected tends to warm it; there isn't a fixed ratio of which is greater. Humans still produce about 100 times more CO2 than volcanoes do.

[awatson945]

Great stuff. You keep making videos and I'll keep watching. Thank you.

[cerebulon]

Hey Claire, are you planning on doing any videos on undersea quakes like the 2004 Indonesian event that caused those massive tsunamis? I remember news reports claiming that the aftershocks were felt on the other side of the world and that it permanently changed the rotation of the earth or something to that effect. I'm loving this supervolcano series by the way.

[WildwoodClaire1]

@cerebulon If you mean "felt" they were picked up by seismometers, then they were felt. I haven't thought about tsunamis, but I may one of these days.

[KYLYKaHYT]

Great geology series! I can hardly wait to see the next part!

[AmsterdamHeavy]

love this series Claire, thank you

[SpiritKeeper]

i've really enjoying rewatching the videos you've been been uploading from the rhymemaiden channel. - i think the super volcano series has been of the most benefit because i think we were shown similarely misleading documentaries in school - so it's been great learning more about the topic.

[CyberNeticRodent]

You shift the furniture in that room around more times than a home improvment show. i often wonder when i watch your videos what is to the right and left of the viewing area. White and empty space like the construst loading program for the Matrix or your cats walking about like people with reading glasses and pina coladas.

Interesting Vid.. always liked vulcanism as a subject.

Live long and prosper.

[WildwoodClaire1]

@CyberNeticRodent I'm re-uploading videos made over a period of almost two years. That's why things seem to shift about a lot.

[aotweb2]

Great work here, when it keeps my attention then you got something ;)

[psychobackpacker]

Living in the Pacific Northwest, I have a slight fascination with volcanos. Thanks for the volcano series.

[bobster451]

Another wonderful video!

Thanks!

[KylieTasticUK]

Excellent series Claire